Carbureter.



n PATENTED 00T. 18, 1904. A.- G. ROEBUGK & F. MUMILLAN.

GARBURBTBR.

PPLIOATION FILED Dnc. '1, 190s.

N0 MODEL.

Inl/67112261' ff?! i@ To a/ZZ whom it may concern."

UNITED STATES Patented October 1 8, 1904.

PATENT GFFICE,

C'ABURETER.

SPECIFICATION forming part f Letters Patent No. 772,673, dated October 18, 1904. Application tied 'December 7,1903. serial No. 184,035.' (No man.)

Be it known that we, ALvAH C. RoEBUoK and FRANK MCMILLAN, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements inCarbureters for Calcium-Light Apparatus; and we do hereby declare the following'to be a full, clear, andexact description of the same, referencelloeingV had to the accompanying drawings,'forming a part of this specification.

The present inventionrelates to portable 4calcium-light apparatus, and more particularly to that type of such apparatus in which oxygen is generated as required and by passage through a carbureter is saturated with a volatile hydrocarbon previous to its passage to the calcium-burner of a stereopticon or the like; and-the present improvement has for its object to provide a simple and efficient structural arrangement and combination of parts in a carbureter ,by means of which the saturation of the passing gas is effected in a very thorough manner and by means of which the degree of saturation is automatically maintained at a uniform standard regardless of the usual variations of the atmospheric temperature due to change of,y seasons and the like, all

`as will hereinafter more fully appear and be more particularly pointed out in the` claims. l In the accompanying drawings, illustrative of the present invention,-Figure 1 is a side elevation with parts in section, illustrating the present invention in its application to the calcium-light of a-stereopticon. Fig. 2 is a vertical sectional elevation of a` carbureter embodying the present invention and taken on line me, Fig. 3. Fig. 3 is a horizontal sectional elevation on line Fig. l2.

Similar vnumerals of reference indicate like parts in 'the different'views.

Referring to the drawings, 1 represents the usual closed gas-generating chamber, near the bottom of which is arranged the holder 2 for the solid chemical, usually sodium binoxid, from which the oxygen gas is generated in an automatic manner by the contact of water with said chemical, such water being supplied from an overhead tank 3 and introduced into the bottom part ofthe chamber 1 by a supplyl,adapted for a ,pipe 4, reaching to near the bottom of said chamber, as usual ,and common to the present vform of gas-generating apparatus.

' 5 is a valved outlet-neck arranged at the upper en d of the casing 1 and having a'tubular connection 6, preferably in the form-of a iiexible hose, with the carbureter, as hereinafter described, in order to conduct the oxygen gas which 'collects Yunder pressure in the upper part of the aforesaid casing 1 to said carbu- .reter previous to the delivery ofsuch gas to the burner of the stereopticon-lamp 7 or other vfrom the generator-chamber 1 and as ameans for imparting heat from the incoming gas to lthe inclosing casing and contents of the carbureter to compensate for the loss of temperlature in same due to the vaporization of the ether or otherequivalent volatile substance within the carbureter during the continued operation of the present apparatus. By this means the heat generated by thechemical action in the generator 1 is utilized in asimple and automatic manner in compensating for the cooling action inthe carbureter due tothe evaporation of its volatile filling and with the result that the temperature of the carbureter is maintained Vat a uniform stage best perfect operation of the apparatus.

12 is the inlet neckor passage of the annular chamber 11, to which the tubular connection 6, before mentioned, is attached.

13 is the outlet neck or passage of the annular chamber 11, to which is attached the tubular connection 14, which extends to the inlet-neck of the carbureter.

15 is an annular shell closed at its lower end 100 by a closure-head and secured at its upper end to the upper head of the carbureter. Such shell divides the interior of the carburetercasing 8 into an outer annular subchamber and an inner cylindrical subchamber, as illustrated in Fig. 2 of the drawings.

16 is an annular roll of woven fabric constituting'a porous filling for the annular subchamber aforesaid and which in actual use is saturated with ether or like volatile hydrocarbon usually employed in the present type of apparatus.

17 is a loose filling of cotton or other like fibers within the cylindrical subchamber aforesaid and which is adapted to assist in preventing a retrograde flow through the carbureter.

18 is an inverted-U-shape tube arranged vertically within the shell 15 aforesaid, with one end or leg extending through the bottom closure-head of such shell and with the other end arranged a small distance above such closurehead, as shown in Fig. 2.

19 is the inlet neck or passage of the carbureter communicating with the top of the cylindrical subcharnber aforesaid and provided with a controlling-valve 20. Such neck or passage is also provided with a nipple on its outer or free end for the convenient attachment of the end of the tubular connection 14, before described, and which forms the conducting connection between the outlet-neck 13 aforesaid and the inlet-neck of the carbureter.

21 is the outlet neck or passage of the carbureter provided with a nipple at its outer end for the convenient attachment of the usual iiexible section of tubing 22, which extends to the vburner of the stereopticon 7 and is adapted to carry a supply of saturated oxygen to such burner.

23 is a branch neck or passage connecting with the inlet-neck 19 aforesaid of the carbureter and provided with a controlling-valve 211. Such branch neck or passage is provided at its outer end with an attaching-nipple for the section of flexible tubing 25, which also extends to the burner of the stereopticon 7 "and is adapted to conduct a supplyof oxygen gas to such burner.

36 is a closure-plug fitting an overflow-orifice in the casing 8 of the earbureter a short distance from the upper end of the same and is adapted in the operation of filling the carbureter with ether through one of the openings of the same to indicate by an overflow at such orifice that the proper amount of ether has been introduced into the carbureter.

rl`he operation of the present apparatus is as follows: With the descent of the water from the elevated tank 3 into the lower part of the generator-chamber 1 and with the contact of such Water with the binoxid of soda therein the oxygen gas is generated and accumulates under pressure in said chamber and with the attainment of a predetermined pressure prevents a further generation of gas by a return displacement of the water toward the elevated tank 3 in manner usual to the present type of gravity-controlled gas-generators. The oxygen gas passes into the annular chamber 11, where the water of entrain ment is separated and the heat of the gas imparted to the carburetor in manner heretofore described, after whichit passes to the inlet-neck 19, at which point the course of the gas divides, one portion, controlled by the valve 24e. passing in a direct manner to the burner of the stereopticon 7 through the flexible connection 25, while the other portion, controlled by the valve 20, passes down the inner cylindrical subehamber of the carbureter and from thence through the U-shaped tube 18 into the bottom part ofthe carbureter and up through the annular filling contained in the annular subchamber of the carburetor to the outletpassage 21, from whence the gas passes in a properly-saturated condition to the burner of the stereopticon through the flexible con nection 111.

Having thus fully described our invention, what wc claim as new, and desire to secure by Letters Patent, is-

1. ln a carbureter of the type herein dcscribed, the combination of a carburoter-casing, closure-heads for the ends of the same, an inner shell dividing the carbureter-casing into an inner subchamber and an outer annular subchamber, a porous filling' in said annular subchamber, an inlet-neck connected to the innersubchamber, andan outlet-neck connected to the annular subcl'lamber, substantially as set forth.

2. 1n a carbureter of the type herein described, the combination of a carbureter-casing, closure-heads for the ends of the same, an inner shell dividing the carbiueter-casing into an inner subchamber and an outer annular subchamber, a porous filling formed by an annular roll of fabric in said annular subchamber, an inlet-neck connected to the inner sul chamber, andan outlet-neck connected to the annular su bchamber, substantially as set forth.

3. In a carbureter of the type herein described, the combination of al carbureter-cas- `entrainment-water of the gas and a heater for the carbureter, substantiall)v as set forth.

et. In a carbureter of the type herein described, the combination of a carlnueterscasing, closure-heads for the ends of the same, an inner shell dividing the carbureter-casing llO chamber, an outlet-neck connected to the an nular subchamber, and an outer chamber surv rounding the carbureter-casing and adapted v to form a separating-chamber for the entrainment-Water of the gas and a heater for the carbureter, substantially as set forth.

5. In a carbureter of the type herein de scribed, the combination. of a carbureter-casing, closure-heads for the` ends of the same, an inner shell dividing the carbureter-casing into an inner subchamber and an outer annular subcharnber'` a-porous filling in said annular subchamber, an inlet-neck connected to the inner subchamber, an outlet-neck connected to theannular subchamber, and an inverted-U-shaped tube arranged Within the inner subchamber and opening at one end into the bottom portion of such chamber`and at the other end ,into the annular subchamber, substantially as set forth.

6. In a carbureter of the type herein described, the combination of a carbureter-casing, closure-heads for theends of the same, an inner shell dividing the carbureter-casing into an inner subchamber and an outer annular subchamber, -a porous filling formed by an annular roll of fabric in said annular subchamber, an inlet-neck connected to the inner subchamber, an outlet-neck connected to the annular subchamber, and an inverted-U-shaped tube arranged Within the inner subchamber and opening at one end into the bottom por-y tion of such chamber and at the other end into the annular subchamber, substantially as set forth.

v7. In a carbureter of the type herein described, the combination of a carbureter-casing, closure-heads'for the ends o f the same, an inner shell. dividing the carbureter-casing into an inner subchamber and an outer annular subchamber, a porous filling in said annular subchamber, an inlet-neck connected to the inner subchamber, anoutlet-neck connected to the annular subchamber,v an inverted- U-shaped tube arranged within the inner subchamber and opening at one end int'o the botA torn portion of such chamberv and at the other end into the annulaisubchamber,'and an outer chamber surrounding the carburetercasing and adapted to form a separatingfchamber for the entrainment-Water of the gas and a heater for the carbureter, substantially as set forth.-

8. In a carbureter of the type herein described, the. combination of a carbureter-casing, closure-heads for the ends of the same, an inner shell dlvidingthe carbureter-casing into an inner subchamber and an outer annular subchamber, a porous filling formed by'an annular roll of fabric in said annular subchamber, an inlet-neckconnected to the inner subchamber, an outlet-neck connected to the annular subchamber, an inverted U shaped tube arranged Within the inner subchamber and opening at one end into the bottom portion of such chamber and at the other end into the annular subchamber, andv an outer chamber surrounding the carbureter-casing and adapted to form a separating-chamber for the entrainment-Water-of the gas and a heater for the carbureter, substantially as set forth.

9. In a carbureter of the type herein described, the combination'of a carbureter-casing, closure-headsfor the ends of the same,

an inner shell dividing the carbureter-casing into an inner subchamber and an outer annular subchamber, a porous filling in said annular subchamber, an outlet-neck connected to the inner subchamber, a valve controlling said inlet-neck, an independent branch neck on said inlet-neck, a valve controlling said branch annular roll .of fabric in said annular subchamber, an inlet-neck connected to the inner subchamber, a valve controlling said inletneck, an independent branch neck on said inlet-neck, a valve controlling said branch, and an outlet-neck connected to the annular subchamber, substantially as set forth.

11. In a carbureter of the type herein de scribed, the combination of a carbureter-casroo ing, closure-heads for the ends of the same,

the carbureter-casing and adapted to form a separating-chamber for the entrainment-Water of the gas, andaheater for the carburete substantially as set forth. l A

ALVAH C. ROEBUCK. FRANK MCMILLAN.

Witnesses:

ROBERT BURNS, M. H.. HOLMES. 

